34 week ultrasound concern!?

So today I had what was supposed to be my final ultrasound, up to this point she's been measuring right on with her due date today it appears she's already measuring to be a 6lb baby where as the average weight would be 4. 7lbs. Now my concern comes in that although head down she's still got 6 weeks to bake and I was determined to do a vbac this time around and with her sudden weight gain I'm starting to second guess myself I'm feeling really anxious that she's going to completely blow my biscuit out and even the nurse tech and head ultrasound doctor both looked at me and said you might want to prepare for another csection... Like tf... 😭I feel like all my expectations are unravelling very suddenly